/****************************************************************************
** Copyright (C) 2001-2021 Klaralvdalens Datakonsult AB.  All rights reserved.
**
** This file is part of the KD Chart library.
**
** Licensees holding valid commercial KD Chart licenses may use this file in
** accordance with the KD Chart Commercial License Agreement provided with
** the Software.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 and version 3 as published by the
** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** Contact info@kdab.com if any conditions of this licensing are not
** clear to you.
**
**********************************************************************/

#ifndef KDCHARTBARDIAGRAM_P_H
#define KDCHARTBARDIAGRAM_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the KD Chart API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "KDChartBarDiagram.h"

#include <QPainterPath>

#include "KDChartAbstractCartesianDiagram_p.h"
#include "KDChartThreeDBarAttributes.h"

#include <KDABLibFakes>


namespace KDChart {

class PaintContext;

/**
 * \internal
 */
class BarDiagram::Private : public AbstractCartesianDiagram::Private
{
    friend class BarDiagram;
    friend class BarDiagramType;

public:
    Private();
    Private( const Private& rhs );
    ~Private() override;

    void setOrientationAndType( Qt::Orientation, BarDiagram::BarType );

    Qt::Orientation orientation;

    BarDiagramType* implementor; // the current type
    BarDiagramType* normalDiagram;
    BarDiagramType* stackedDiagram;
    BarDiagramType* percentDiagram;
    BarDiagramType* normalLyingDiagram;
    BarDiagramType* stackedLyingDiagram;
    BarDiagramType* percentLyingDiagram;
};

KDCHART_IMPL_DERIVED_DIAGRAM( BarDiagram, AbstractCartesianDiagram, CartesianCoordinatePlane )

    class BarDiagram::BarDiagramType
    {
    public:
        explicit BarDiagramType( BarDiagram* d )
            : m_private( d->d_func() )
        {
        }
        virtual ~BarDiagramType() {}
        virtual BarDiagram::BarType type() const = 0;
        virtual const QPair<QPointF,  QPointF> calculateDataBoundaries() const = 0;
        virtual void paint( PaintContext* ctx ) = 0;
        BarDiagram* diagram() const;

    protected:
        // make some elements of m_private available to derived classes:
        AttributesModel* attributesModel() const;
        QModelIndex attributesModelRootIndex() const;
        ReverseMapper& reverseMapper();
        CartesianDiagramDataCompressor& compressor() const;

        void paintBars( PaintContext* ctx, const QModelIndex& index, const QRectF& bar, qreal maxDepth );
        void calculateValueAndGapWidths( int rowCount, int colCount,
            qreal groupWidth,
            qreal& barWidth,
            qreal& spaceBetweenBars,
            qreal& spaceBetweenGroups );

        BarDiagram::Private* m_private;
    };
}

#endif /* KDCHARTBARDIAGRAM_P_H */
